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- According to the fundamental theory of group representations, a direct proof is given for the singleness of demension of Dirac s matrix in the relativistic quantum mechanics. 根据群表示论的基本定理，对相对论量子力学中狄拉克矩阵维数的唯一性给出直接证明。
- If the gauge compensating term is added to the action, the S matrix in the physical state vector space can be expressed in a form which has no couplings of physical and unphysical particles, and so the physical S matrix is gauge independent and unitary. 在作用量中添上规范补偿项以后;物理态空间中的S矩阵可以写成物理粒子和非物理粒子之间没有耦合的形式;显示出S矩阵的规范无关性和么正性.
- This paper firstly puts forward the preparation method of novel antifriction nano-composites with graphite nano-sheets (NanoG) as lubricant, heat-resistant bismaleimide (BMI )for composite’s matrix. 本文首次提出利用高、低温膨胀不同粒度的可膨胀石墨制备的纳米石墨薄片（NanoG）为润滑剂，以耐高温的双马来酰亚胺树脂（BMI）为基体，制备新型耐热纳米减摩复合材料。
- Build Quality: A-: It’s a very attractive, solid, well built amp. 外观：A-：它是一非常吸引, 结实和制造好耳放。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Answer the following question(s). 回答下列问题。
- Most plural nouns in English end in s'. 英语的复数名词多以s结尾。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- The prices of B& W TV sets have gone down. 黑白电视机跌价了。
- Here are the designs. Which one(s) do you prefer? 这就是那些图样.;你喜欢哪一个[些]?
- From US News & World Report. 译自《美国新闻与世界报道》
- Which journal(s) do you subscribe to? 你订阅哪一种杂志?
- Complimentary beauty Products & Treatment. 附赠美容及护肤产品
- The novel had an enormous vogue in the 1930's. 这本小说在三十年代曾广为流传。
- We're not setting out a shop sign, Rosen & Son. 我们并不是挂起“罗森母子公司”的招牌。
- He earned four A's in the final examinations. 他期末考试四门功课得优。
- SHANGHAI AMP BUSINESS CONSULTANTS CO., LTD. 上海安普商务咨询有限公司。
